A JavaScript function assigned to process.stdout.write or
process.stderr.write takes its parameters from the call, not from Node's
overloads, but the lowering returned before giving the function its
arguments slot. `arguments.length` then folded to the declared parameter
count (3 for `function (chunk, encoding, callback)` called with one
argument, 0 for a function without parameters), and reading
`arguments[i]` was refused at run time.
The replacement now receives the call's arguments, so `arguments` holds
what the caller passed, as in Node.
